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Steering system for a marine vessel

a steering system and marine technology, applied in the direction of steering initiation, process and machine control, instruments, etc., can solve the problem that the angle or position of the steering device(s) does not necessarily reflect the actual turning of the vessel, so as to reduce the difference between signals

Active Publication Date: 2012-03-27
CWF HAMILTON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This system maintains a commanded turn rate during turns, reducing the need for constant manual adjustments and preventing loss of control by stabilizing the vessel's turn rate, ensuring predictable handling and stability at various speeds and conditions.

Problems solved by technology

However, because in practice there are always external disturbances such as wind, waves, tidal currents and vessel directional instabilities, the angle or position of the steering device(s) does not necessarily reflect how the vessel will actually turn.

Method used

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  • Steering system for a marine vessel
  • Steering system for a marine vessel

Examples

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Embodiment Construction

[0022]Referring to the accompanying FIGURE, the preferred form steering system 100 for a waterjet vessel includes a steering input device 101, control system 102 and steering device 103. The steering input device 101 may be, for example, a helm wheel 104 and / or steering joystick 105, which is / are operable by the pilot or helmsperson to turn the vessel via the steering device 103, for example the steering deflector 103a of a waterjet unit 106. It will be appreciated that other steering input devices could be used alternatively, such as for example a tiller or manoeuvring controller.

[0023]The control system 102 is an interface between the steering input device 101 and tie steering deflector 103a, and linked to the control system 102 is a yaw rate sensor 107 and a position sensor 108. The yaw rate sensor 107, for example a rate gyro, is fixed to the vessel and is configured to sense yaw motions of the vessel, while the position sensor 108 is arranged to sense the position of the steeri...

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Abstract

A steering system for a marine vessel includes one or more steering devices operable to turn a marine vessel; a steering input device arranged to generate a desired turn rate signal; a rate sensor arranged to generate a turn rate signal indicative of vessel turn rate; and a control system configured to receive the vessel and desired turn rate signals and to control the steering device(s) to turn the marine vessel so as to minimise any difference between the signals.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a steering system for a marine vessel. In particular, although not exclusively, the steering system is suited to watetjet vessels.BACKGROUND TO THE INVENTION[0002]Various steering systems are available for marine vessels, boats, ships and the like. At a general level these systems usually comprise a helm wheel or steering joystick which controls one or more steering devices located at the stern of the marine vessel.[0003]The type of steering device(s) utilised often depends on how the marine vessel is propelled through the water. The steering device for a propeller driven marine vessel may simply be a rudder, or the propeller itself may be pivotable in the case of an outboard motor or stern drive. For watetjet driven marine vessels, steering deflectors or nozzles which control the direction of one or more waterjets are usually provided as steering devices.[0004]Many steering systems, particularly for larger boats or vessel...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G06F7/00
CPCB63H25/02B63H25/46G05D1/0206G05D1/0875
Inventor BORRETT, JOHN ROBERT
Owner CWF HAMILTON
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